Blind-slat fastening



(No Model.)

B. M. OOPFIN;

BLIND SLAT FASTENING.

. Patented Mar. 17, 1885..

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b m0 m% [m 0 E Ztnem'em m hur, Washington, D. c.

UNITED *rn'rns a'rnnr EBEN MOULTON OOFFIN, OF HUBBARDSTON, MASSACHUSETTS.

BLlND -SLAT FASTENING.

SPECIFICATION forming part of Letters Patent No. 313,919, dated March 17, 1885.

(No model.)

T 0 ctZZ whom it may concern:

Be it known that I, EBEN M. 00mm, of Hubbardston, in the county of NVorcester, of the Commonwealth of Massachusetts, have invented a new and useful Improvement in Blind-Slat Fastenings, and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which Figure 1 is a front elevation, and Fig. 2 a

transverse section, of part of a window-blind provided with my invention, the nature of which is defined in the claims hereinafter presented.

, The improvement or invention refers to win dow-blindswhose slats are severally pivoted at their ends in the'blind-frame, and so conneeted at their iniddles with a bar that on turning such bar lengthwise of it each slat of the series shall be more or less revolved.

In carrying out my invention Iconnect the bar at its lower end. with a slide by means of a link or rod jointed to both, such slide being supported in a socket-piece fixed to the frame crossbar that is directly below the series of slats. The socket-piece has in it, lengthwise of it, a slot that opens into the socket con taining the slide. A clamp-screw extends through the slot and screws into the slide, and there is within the socket and around the slide a spiral spring, which is applied to both, so as to force the slide upward. The spring'may be dispensed with; but it is preferable to have it, as it serves to automatically move upward the several slats on the screw being turned backward.

In the drawings, A denotes the blind-frame; B B, 810., its series of slats; 0, their operative bar; D, the link or rod that connects the said bar with the slider E.

F is the support-piece of the slider, it being shown as fastened to the lower girt or cross bar a of the frame A. Vvithin the supportpiece is the spiral spring G,that surrounds the slider. This spring, at its lower end, rests on the bottom of the slider-socket I), while at its upper end the spring bears against a shoulder, 0, formed on the slide. The slot in the socket piece is shown at (Z and the clamp-screw at H.

On taking hold of the head or knob e of the clamp-screw and pressing it so as to move the slide downward the several slats will be turned simultaneously, and may be held in position more or less open by setting up the screw so as to cause its head to bear firmly against the socket-piece. On loosening or turning back the screw the-spiral spring will force upward the slide, and consequently cause the slats to be turned upward toward each other.

I claim- 1. The blind-slat fastening as composed of the link, slide, the slotted socket-piece, spiral spring, and the clamp-screw, arranged and combined substantially as set forth.

2. The combination of the blind-frame and its series of movable slats and their connection-bar with the slat-fastening fixed to such bar and frame, and consisting of the link, slide, slotted support-piece, spring, and clampscrew, arranged and applied substantially in manner to operate as represented.

EBEN MOULTON G'OFFIN. 

